改为一般疑问句和否定句

1.I like grapes.
一般疑问句:Do you like grapes?
否定句:I don't like grapes.
2.She's young.
一般疑问句:Is she young?
否定句:She isn't young.
3.I'm a university student
一般疑问句:Are you a university student?
否定句:I'm not a university student.
4.We have English on Wednesdays.
一般疑问句:Do you have English on Wednesday?
否定句:We don't have English on Wednesday.
5.I can ride a bike.
一般疑问句:Can you ride a bike?
否定句:I can't ride a bike.